Thanks, Mark,
Interestingly it's not mentioned in Nick Upton's site, but the web mentions good birds such as Green broadbill, & even, probably erroneously, Gurney's pitta!
And, as you say, a whole range of mammals too.
I'm going with my partner, and don't need much in Thailand now, so just looking for some forest experience with the chance of some birds.
I'm going to do Krabi mangroves - four possibles still there, having dipped the Kingfisher, Pitta, Nordmann's, Asiatic dowitcher there & elsewhere before.
H